#9880: Segfault in PyNaC 0.2.0.p4
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Reporter: jpflori | Owner: burcin
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.7.1
Component: symbolics | Keywords: pynac
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Comment(by burcin):
I updated my [https://bitbucket.org/burcin/pynac-patches pynac queue] with
a new patch that fixes the random sign Volker mentioned in comment:48. It
turns out that the issue is bigger. The result printed in some cases might
be wrong, since the internal structure of an `add` object is modified when
`seq_sorted` is already stored. I added an assert statement in
`{add,mul}::get_sorted_seq()` to test consistency. With the `minus.patch`
from my queue applied, I still get crashes while testing
`sage/calculus/tests.py`. So this needs more work.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9880#comment:50>
Sage <http://www.sagemath.org>
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